Flexible Optical Biosensor Layer for Accurate Skin Detection
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Solution Overview
Problem
Conventional bio sensing devices are rigid, making them uncomfortable to wear and difficult to attach to biological skin, leading to reduced detection accuracy and limited durability due to damage during attachment and removal.
Innovation Solution
A bio sensing device with a medium layer that has a transmittance greater than 60% at a specific wavelength, allowing for flexible and stretchable design, featuring a light emitting element and optical sensor configuration that minimizes the medium's influence on detection, enabling comfortable and accurate biological information capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If sensors are formed on a rigid substrate, then structural stability is improved, but comfort and detection accuracy deteriorate due to inability to conform to skin
Solution Approach 1:
The patent replaces rigid substrates with flexible and stretchable substrates that can conform to the contours of biological skin. This allows the sensor array to maintain structural integrity while adapting to curved surfaces, thereby improving both comfort and detection accuracy through better skin contact.
Solution Approach 2:
The patent modifies the mechanical properties of the substrate by changing from rigid to flexible/stretchable materials. This parameter change enables the substrate to deform and conform to skin surfaces while maintaining sensor functionality, resolving the contradiction between structural stability and detection accuracy.
2Ease of manufacture
If a rigid substrate is used, then manufacturing simplicity is improved, but ease of attachment and comfort deteriorate
Solution Approach 1:
The patent employs flexible and stretchable substrates that can be easily conformed and attached to skin surfaces. These substrates maintain manufacturing feasibility while dramatically improving ease of attachment through their ability to stretch and conform to body contours.
3Strength
If conventional rigid structure is used, then initial structural integrity is improved, but durability deteriorates due to damage during attachment and removal
Solution Approach 1:
The patent uses flexible and stretchable substrates that can withstand repeated attachment and removal cycles without damage. The elasticity and flexibility of these substrates allow them to deform during attachment/removal and return to original shape, significantly improving durability while maintaining structural integrity.
Solution Approach 2:
The patent introduces dynamic flexibility to the substrate, allowing it to adapt its mechanical properties during attachment and removal processes. This dynamic characteristic enables the substrate to absorb mechanical stresses during repeated use, preventing damage and improving overall reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device provides improved comfort and detection accuracy while allowing for repeated use without damage, as the flexible medium layer reduces interference and enhances the transmission of light for effective biological signal detection.
Implementation Method 1
the medium layer has a first transmittance greater than 60% with respect to the first wavelength
Implementation Method 2
a light emitting element... configured to emit a light toward a user's skin layer
Implementation Method 3
an optical sensor configured to receive a reflected part of the light from the user's skin layer
Data Source
AI summary
Disclosed is a bio sensing device including a medium layer, a light emitting element and an optical sensor. The light emitting element is configured to emit a light toward a user's skin layer, in which the light passes through the medium layer and has a maximum intensity in a first wavelength. The optical sensor is configured to receive a reflected part of the light from the user's skin layer, in which the reflected part of the light passes through the medium layer, and the medium layer has a first transmittance greater than 60% with respect to the first wavelength.